CVE-2026-20023
Medium · 6.1CVSS
6.1
EPSS
0.2%
Published
Mar 4, 2026
CISA due date
—
The record
A vulnerability in the OSPF protocol of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, adjacent attacker to corrupt memory on an affected device, resulting in a denial of service (DoS) condition. This vulnerability is due to memory corruption when parsing OSPF protocol packets. An attacker could exploit this vulnerability by sending crafted OSPF packets to an affected device. A successful exploit could allow the attacker to cause memory corruption causing the affected device to reboot, resulting in a DoS condition.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
Related vulnerabilities
- CVE-2026-111497 A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli… CWE-787
- CVE-2026-112397 Pillow is a Python imaging library. CWE-787
- CVE-2026-112059 libLAS through 1.8.1 contains a heap out-of-bounds write vulnerability in the point… CWE-787
- CVE-2026-89088 A flaw was found in parted. CWE-787
- CVE-2026-89085 A flaw was found in parted. CWE-787
- CVE-2026-85746 MariaDB server is a community developed fork of MySQL server. CWE-787
- CVE-2026-107815 MariaDB server is a community developed fork of MySQL server. CWE-787
- CVE-2026-56851 The Nickname profile can panic with an out-of-bounds slice error when transforming… CWE-787